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Coating for inner wall of styrene tank

A technology of styrene and coatings, applied in the direction of coatings, etc., can solve the problems of quality impact, lack of polymerization inhibitors, poor resistance to styrene, etc., and achieve the effect of high cross-linking density

Inactive Publication Date: 2013-01-16
SHANGHAI DATONG HIGH TECH MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the coatings used on the inner wall of storage tanks are epoxy and polyurethane coatings. The solvent resistance of these coatings has yet to be tested, and the ability to resist styrene may not be good; at the same time, the surface in contact with styrene and the coating has low fluidity. , forming a relative vacuum lacking a polymerization inhibitor, which is prone to self-polymerization of styrene on the surface, thereby affecting the quality of styrene (the generation of oligomers in styrene will affect the quality of subsequent polymerization products)

Method used

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  • Coating for inner wall of styrene tank
  • Coating for inner wall of styrene tank
  • Coating for inner wall of styrene tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The formulation of component A of the primer is as follows:

[0039]

[0040] The formulation of the primer component B is as follows:

[0041] Cardanol epoxy curing agent 16.5

[0042] n-Butanol 8.5

[0043] A component: B component = 1:4.

[0044] production process:

[0045] Component A: In the container, add novolac epoxy resin and mixed solvent, stir evenly, then add pigment, filler dispersant and anti-sedimentation agent in turn, enter the sand mill and grind to a fineness ≤ 40 pm to obtain component A.

[0046] Component B: In a dry and clean container, add epoxy curing agent and solvent n-butanol, stir evenly to obtain Component B.

[0047] Mix component A and component B at a weight ratio of 4:1 to obtain a styrene tank interior coating.

Embodiment 2

[0049] The formula of component A of the intermediate paint is as follows:

[0050]

[0051] The formulation of the primer component B is as follows:

[0052] Cardanol epoxy curing agent 15.5

[0053] n-Butanol 9.5

[0054] A component: B component = 1:4.

[0055] production process:

[0056] Component A: In the container, add novolac epoxy resin and mixed solvent, stir evenly, then add pigment, filler dispersant and anti-sedimentation agent in turn, enter the sand mill to grind to a fineness of ≤40μm, add 2. After adding 5-di-tert-butylhydroquinone inhibitor, stir evenly to obtain component A.

[0057] Component B: In a dry and clean container, add epoxy curing agent and solvent n-butanol, stir evenly to obtain Component B.

[0058] Mix component A and component B at a weight ratio of 4:1 to obtain a styrene tank interior coating.

Embodiment 3

[0060] The formula of component A of the topcoat is as follows:

[0061]

[0062]

[0063] The formulation of the primer component B is as follows:

[0064] Cardanol epoxy curing agent 23.6

[0065] n-Butanol 1.4

[0066] A component: B component = 1:4.

[0067] production process:

[0068] Component A: In the container, add novolac epoxy resin and mixed solvent, stir evenly, then add pigment, filler dispersant and anti-sedimentation agent in turn, enter the sand mill to grind to a fineness of ≤40μm, and obtain A component.

[0069] Component B: In a dry and clean container, add epoxy curing agent and solvent n-butanol, stir evenly to obtain Component B.

[0070] Mix component A and component B at a weight ratio of 4:1 to obtain a styrene tank interior coating.

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Abstract

The invention relates to a coating for an inner wall of a styrene tank. The coating consists of a component A and a component B in a weight ratio of 4:1, wherein the component A comprises the following components in part by weight: 30 to 55 parts of epoxy phenolic resin, 10 to 20 parts of mixed solvent, 10 to 30 parts of pigment, 10 to 25 parts of packing, 0 to 20 parts of polymerization inhibitor, 0.5 to 2 pars of dispersing agent and 1 to 3 parts of anti-settling agent; and the component B comprises the following components in part by weight: 15 to 25 parts of epoxy hardener and 1 to 10 parts of n-butyl alcohol. Compared with the prior art, the invention has the advantages that the coating can prevent styrene from gradually automatically agglutinating on the surface of the inner wall of the storage tank, has ideal reaction activity and high crosslinking density and can resist corrosion of benzene, styrene and the like, and a film cannot foam, crack or fall off.

Description

technical field [0001] The invention relates to a polymer paint, in particular to a styrene tank inner wall paint. Background technique [0002] As an important chemical raw material, styrene is the main raw material of synthetic resin, ion exchange resin and synthetic rubber. Usually, commercial products are added with polymerization inhibitors. It is required to reduce the accumulation of surface charges in long-term storage tanks, and avoid direct contact between styrene and ferrous metals to avoid self-polymerization of styrene in the presence of metals. [0003] At present, most of the coatings used on the inner wall of storage tanks are epoxy and polyurethane coatings. The solvent resistance of these coatings has yet to be tested, and the ability to resist styrene may not be good; at the same time, the surface in contact with styrene and the coating has low fluidity. , forming a relative lack of a vacuum of polymerization inhibitors, the self-polymerization of styrene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D161/06C09D7/12
Inventor 杨志英
Owner SHANGHAI DATONG HIGH TECH MATERIALS
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